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Los Angeles transportation officials are alerting I-405 and regional freeway motorists of an 80-hour northbound I-405 Freeway closure operation in the Sepulveda Pass this Presidents' Day weekend, February 14 to 18, 2014, and asking motorists to help prevent multi-hour freeway delays.

The closure consists of a partial daytime lane reduction and a full nighttime closure of the freeway’s northbound lanes between Getty Center Dr and Ventura Bl.  Approximately 5.6 miles long, the closure equals two-thirds of the length of the entire I-405 Sepulveda Pass Improvements Project.

During daytime hours, two northbound lanes will remain open while three lanes will be closed. During nighttime hours, all five northbound freeway lanes will be closed. While the southbound lanes will remain open during daytime hours of the closure, normal closures may occur during nighttime hours.

Sections of the closure will reopen as they are completed. Updates are available at Twitter and Facebook. Call 511 during the closure weekend and say “Jamzilla” or visit go511.com for real-time traffic updates.

Sepulveda Bl will remain at full capacity during the closure, although that street does not have the capacity to move all the traffic diverted from the northbound lane closures.

Traffic control officers provided by the Los Angeles Department of Transportation will help guide drivers at each I-405 northbound on-ramp.

Transportation officials ask drivers detouring from the closed I-10 connectors to use freeways rather than local streets.

80-Hour Lane Reduction, Ramp and Connector Configurations

Northbound Ramps Daytime Ramp Status Nighttime Ramp Status Closure Time (PM)
Santa Monica on-ramp Open Closed 10
Santa Monica off-ramp Open Open NA
Eastbound Wilshire on-ramp Open Closed 10
Westbound Wilshire on-ramp Open Closed 10
Eastbound Wilshire off-ramp Open Open NA
Westbound Wilshire off-ramp Open Open NA
Sunset Bl on-ramp Monitored for traffic congestion Closed 10
Sunset Bl off-ramp Open Closed Midnight
Moraga Dr on-ramp Open Closed 10
Moraga Dr off-ramp Closed Closed Midnight
Getty Center Dr on-ramp Closed Closed 10
Getty Center Dr off-ramp Open Closed Midnight
Skirball Center Dr on-ramp Open but subject to closure Closed 10
Skirball Center Dr off-ramp Open Closed Midnight
Ventura Bl off-ramp Open Closed Midnight

Due to dynamic conditions such as safety concerns or traffic conditions, all closures are subject to change.

Connector Closures Daytime Ramp Status Nighttime Ramp Status
I-10 east to northbound I-405 Closed Open but monitored for traffic congestion
I-10 west to northbound I-405 Closed Open but monitored for traffic congestion
US 101 south to northbound I-405 Open Open
US 101 north to northbound I-405 Open Open

The closure—beginning at 10pm Friday, February 14 and ending on Tuesday, February 18 at 6am—allows workers to excavate sections of the future high-occupancy vehicle lane roadway surface and repave those sections, key activities for finishing the project by its scheduled mid-2014 completion date. The 80-hour closure will eliminate several 55-hour closures from the project schedule.

Full northbound nighttime freeway closures will occur at these times:

  • Saturday morning, February 15 from 1am-6am
  • Sunday morning, February 16 from 2am to 7am
  • Monday morning, February 17 from midnight to 5am
  • Tuesday morning, February 18 from midnight to 6am

The designated alternative route for nighttime full closures will be for motorists to take the I-405 northbound off-ramp to westbound Wilshire, take Sepulveda Bl north, returning to the northbound I-405 at the Greenleaf northbound on-ramp.

The Los Angeles Metropolitan Transportation Authority (Metro), in conjunction with California Department of Transportation (Caltrans), the Los Angeles Department of Transportation (LADOT), and a host of law enforcement and emergency response agencies throughout Los Angeles County are asking drivers to avoid traveling northbound through West Los Angeles and the Sepulveda Pass during the three-day President’s Day weekend.

Because of the closures on the heavily traveled northbound lanes of the I-405 and the possibility of major traffic delays, these agencies are asking drivers to eliminate unnecessary automobile trips, avoid the area and/or divert to other freeways.

Without these diversions, traffic conditions on local streets and freeways within the Southern California region could result in multi-hour delays.

Motorists who travel during the February 14 to 18 weekend are advised to prepare their itineraries in advance, monitor real-time traffic conditions prior to beginning their trips, and follow alternative routes. Caltrans computerized message signs along freeways in neighboring counties and other metropolitan regions in Southern California will inform drivers in advance of the closure.

While the I-405 project has completed multiple complex tasks, the contractor must now finish the future high-occupancy vehicle lane between the I-10 and US 101.

In the event of inclement weather during the 80-hour closure, the project will commence continuous weekend closures of the northbound freeway starting the following weekend, February 21 for up to four weekends to complete the originally intended work.

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